Effect of Storage on Measured Blood Lactate Concentration - A Research Note

Dw, Hill

doi:10.1055/s-2007-972970

Cited by 4 publications

(1 citation statement)

References 1 publication

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“…Each swimmer performed all-out trials over 91, 183, and 457 m. Exactly 5 min after each swim, a 40-microliter fingerprick blood sample was obtained in an EDTA-treated microcapillary tube and immediately diluted in a preservative cocktail containing sodium fluoride and Triton X-100 (5). For each individual, blood lactate concentration was determined using a YSI 2300 Stat analyzer and the highest value was taken as the peak blood lactate concentration.…”

Section: Studymentioning

confidence: 99%

250 Application of the Critical Power Concept to Young Swimmers

Steward

Lane

Hill

1994

Medicine & Science in Sports & Exercise

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The purpose of this study was to evaluate use of the critical power concept with swimmers ages 8 to 18 years. Critical velocity (CV) and anaerobic swimming capacity (ASC) were determined from the results of three short time trials (n = 86) or competition swims (n = 60). Data fit the critical power model well, as evidenced by high R2 and low SEE of CV and ASC estimates. CV was correlated with velocity in an endurance swim (r 2 0.86) and ASC was correlated with peak lactate (r-2 0.69). Thus, even in very young swimmers, CV and ASC provide mode-specific indices of endurance and anaerobic capacity, respectively.

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Section: Studymentioning

confidence: 99%

250 Application of the Critical Power Concept to Young Swimmers

Steward

Lane

Hill

1994

Medicine & Science in Sports & Exercise

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Energy system contributions in middle-distance running events

Hill¹

1999

Journal of Sports Sciences

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The aim of this study was to estimate the energy contributions in middle-distance running events for male and female university athletes. The oxygen uptake (VO2) response during high-speed running was measured directly during exhaustive treadmill tests. Muscle mass was estimated using anthropometry. Each athlete completed an average of three races over 400 m, 800 m or 1500 m. Five minutes after each race, they provided a blood sample for determination of blood lactate concentration. For each race, energy cost, which was expressed as oxygen equivalents, was calculated as the sum of the aerobic and anaerobic components. The aerobic contribution was calculated as the sum of oxygen stores (2.3 ml O2.kg body mass-1) and total VO2 (based on the VO2 response to treadmill running). The anaerobic contribution was calculated as the sum of the energy available from phosphocreatine stores (37 ml O2.kg muscle mass-1) and the energy from glycolysis (3.0 ml O2.kg body mass-1 per mmol.l-1 increase in blood lactate concentration). For the women, the anaerobic energy contributions for the 400 m, 800 m and 1500 m averaged 62%, 33% and 17%, respectively. For the men, the anaerobic contributions averaged 63%, 39% and 20%, respectively. This information will help coaches and sport scientists to design and implement individualized training programmes.

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